Trade-Off Analysis on the Multi-Objective Design Optimization(Mechanical Systems)

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  • 多目的最適設計におけるトレードオフ分析法(機械力学,計測,自動制御)
  • 多目的最適設計におけるトレードオフ分析法
  • タモクテキ サイテキ セッケイ ニ オケル トレードオフ ブンセキホウ

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The aims of the multi-objective design optimization are to find the pareto optimal solutions, and are also to analyze the trade-off between the objectives. The interactive multi-objective design optimization based on the Satisficing Trade-Off Method (STOM) is used in this paper. Especially, the trade-off matrix to analyze the trade-off between objectives quantitatively is introduced. Each element of trade-off matrix consists of the projection matrix of active constraints and the gradient of objective functions. Additionally, it is possible to determine the new aspiration level by using the trade-off matrix. To obtain the new aspiration level, the compromise point and solution are defined by using the trade-off ratio. To obtain the compromise point, the designer input the trade-off ratio between objectives and can obtain the new aspiration level. It is also possible to apply the trade-off matrix to the automatic trade-off method, which is a method to determine the new aspiration level. Through basic numerical examples, the validity is examined.

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